Charles Thomas Johnston, born on August 15, 1948, in Visalia, California, is an acclaimed American musician best known for his role as a founding member, guitarist, lead vocalist, and songwriter for the rock band the Doobie Brothers. Johnston's musical journey began at a young age when he was influenced by rhythm and blues artists like Little Richard, Bo Diddley, and James Brown. He started playing the guitar at the age of twelve, having previously experimented with the saxophone and clarinet.

During his early career, Johnston played in various bands, including a Mexican wedding band and a soul group. His move to San Jose to finish college marked a significant turning point, as he met Skip Spence, who introduced him to John Hartman. This meeting eventually led to the formation of the Doobie Brothers. Johnston's unique guitar style, characterized by a blend of strumming and percussive rhythm, became a signature sound for the band, particularly evident in hits like "Long Train Runnin'" and "Listen to the Music."

Despite initial setbacks, such as the first Doobie Brothers album not achieving commercial success, Johnston persevered and contributed significantly to the band's rise to fame. A health issue in 1975 led to his temporary departure from touring, during which Michael McDonald joined the band and altered its musical direction. Discontent with the changes, Johnston left the band in 1977 to pursue a solo career, releasing albums like "Everything You've Heard Is True" and "Still Feels Good."

Johnston rejoined the Doobie Brothers in 1988, contributing to their minor hit "The Doctor" in 1989. His contributions to rock music were recognized with his induction into the Rock and Roll Hall of Fame as a member of the Doobie Brothers in 2020. Throughout his career, Johnston has remained an influential figure in rock music, known for his distinctive guitar work and vocal style.